NAACP State Conference President Scot Esdaile said at a news conference on Tuesday that the civil rights group is demanding explanations about why Mendoza and two other people have died since 2008 after Meriden police used stun guns.

State police are investigating the incident on Sunday night outside the police station.

Authorities say Mendoza was bleeding from his hands, acting irrationally and high on drugs. Troopers say he became combative and was subdued with a stun gun. Mendoza died at a hospital later that night.